Ключевые слова: audience, audio, auditorium, background, blurred, business, coaching, comedy, communication, concept, concert, conference, congress, convention, education, entertainment, equipment, event, group, hall, karaoke, knowledge, lecture, light, live, meeting, mic, microphone, modern, music, people, performance, podium, presentation, professional, public, room, screen, seminar, sound, space, speaker, speaking, speech, studio, study, talk, technology, university,